Fault Tolerant Symmetric Multi-Computing System

1. A fault-tolerant multi-computing system, the system comprising: an application at a first group comprised of one or more application segments, each application segment having one or more replicas, and each replica residing in a node; a logical connection interconnecting the first group and a second group, the logical connection comprised of a plurality of endpoints, each endpoint coupled to a node and one or more replicas residing in the node; and at least one of the replicas of an application segment configured to process a request received from the second group, the request intended for the application segment.

2. The system of claim 1 , wherein each of the plurality of endpoints is configured to allow the exchange of data between one or more replicas residing in a node coupled to the endpoint and the second group.

3. The system of claim 1 , wherein each of the plurality of endpoints is configured to: compare a first response by a replica of an application segment to a second response by at least one other replica of the application segment; and determine the appropriate response to transmit to the second group based on the comparison.

4. The system of claim 3 , wherein the replica resides in a node coupled to the endpoint and the other replica resides in a distinct node.

5. The system of claim 3 , wherein the appropriate response to transmit to the second group is determined by applying at least one of the following policies during the comparison: equal output, majority agreement, correct result, and successful operation.

6. The system of claim 1 , wherein the request received by each of the plurality of replicas of the application segment is received directly from the second group.

7. The system of claim 1 , wherein the replicas are configured to be migrated from one node to another at will.

8. The system of claim 1 , wherein each of the plurality of endpoints is configured to deliver requests received from the second group to application segments coupled to the endpoint in a specific order.

9. The system of claim 1 , wherein each of the plurality of endpoints is configured to atomically deliver requests received from the second group to a node coupled to the endpoint.

10. The system of claim 1 , wherein the logical connection comprises Transmission Control Protocol (TCP) and corresponding interfaces.

11. A method for processing requests with fault-tolerance, the method comprising: dividing an application at a first group into one or more application segments, each application segment having one or more replicas, and each replica residing in a node; establishing a logical connection interconnecting the first group and a second group, the logical connection comprised of a plurality of endpoints, each endpoint coupled to a node and one or more replicas residing in the node; and processing a request received from the second group by at least one of the replicas of an application segment, the request intended for the application segment.

12. The method of claim 11 , wherein each of the plurality of endpoints allows the exchange of data through the logical connection between one or more replicas residing in a node coupled to the endpoint and the second group.

13. The method of claim 11 , further comprising: comparing a first response by a replica of an application segment to a second response by at least one other replica of the application segment; and determining the appropriate response to transmit to the second group based on the comparison.

14. The method of claim 13 , wherein the appropriate response to transmit to the second group is determined by applying one or more of the following policies during the comparison: equal output, majority agreement, correct result, and successful operation.

15. The method of claim 11 , wherein the request received by each of the plurality of replicas of the application segment is received directly from the second group.

16. The method of claim 11 , wherein the replicas are migrated from one node to another at will.

17. The method of claim 11 , wherein requests received from the second group are delivered to application segments in a specific order.

18. The method of claim 11 , wherein requests received from the second group are atomically delivered to nodes.

19. The method of claim 11 , wherein the logical connection comprises Transmission Control Protocol (TCP) and corresponding interfaces.